不同追肥水平对北美海蓬子生长和产量形成的影响  

Effects of different topdressing levels on growth and yield formation of Salicornia bigelovii Torr.

作　　者：徐坚[1] 史建磊[1] 王燕[1] 曾国权[2] 陈先知[1] 王克磊[1] 

机构地区：[1]温州科技职业学院,浙江温州325006 [2]浙江省海洋水产养殖研究所,浙江温州325005

出　　处：《南方农业学报》2014年第3期415-419,共5页Journal of Southern Agriculture

基　　金：温州市科技计划项目(N20090020)

摘　　要：【目的】研究不同追肥水平下北美海蓬子的生长和产量形成情况，为其引种栽培提供一定理论指导。【方法】以北美海蓬子为试验材料，调查不同尿素∶复合肥（1∶1）追施水平（0、75、150、225、300 kg/ha）下的生物性状表现并进行统计分析。【结果】追肥水平对北美海蓬子生育影响显著，在0-225 kg/ha两者呈正相关，追肥量为225 kg/ha时嫩茎产量高达30000 kg/ha、种子产量近3000 kg/ha，追肥量为300 kg/ha时产量开始下降。225 kg/ha是北美海蓬子生长和产量形成的适宜追肥量，在株高、茎粗、分枝数、生物量（尤其是地上部分）等多个生物性状上表现优越。研究获得株高、分枝数、节间长、茎粗与追肥量的相关性拟合曲线：y=30.069＋1.845x-0.059x2、y=15.897＋0.377x＋0.019x2-0.001x3、y=1.997＋0.073x-0.003x2、y=0.300＋2.381＆#215;10-5x＋0.001x2-4.667＆#215;10-5x3，各曲线均达到显著水平。【结论】北美海蓬子株高、分枝数、节间长、茎粗与追肥量的相关性拟合曲线均达到显著水平，尿素与复合肥（1∶1）225 kg/ha追肥量最有利于北美海蓬子生长和产量形成。[Objective]Growth and yield formation of Salicornia bigelovii were studied by using different topdressing levels in order to provide theoretical references for introduction cultivation of Salicornia bigelovii. [Method]The biological trait investigation and statistical analysis of Salicornia bigelovii were carried out by using different urea-compound fertilizer （1∶1） topdressing levels（0, 75, 150, 225, 300 kg/ha）. [Result]Topdressing levels of compound fertilizer had significant effects on growth and development of Salicornia bigelovii,and they showed a positive correlation within 0-225 kg/ha topdressing level. The peak yield of edible tender stems and seeds was about 30000 and 3000 kg/ha in the level of 225 kg/ha, respectively, while the effects of 300 kg/ha treatment began to decline. The topdressing level of 225 kg/ha was suitable for the growth and yield formation of Salicornia bigelovii,especially presented dominant in plant height,stem diameter,branch number and biomass （especially aboveground）. The correlation fitting curves between plant height,branch number,inter-node length,stem diameter and topdressing level were obtained like as y=30.069＋1.845x-0.059x2,y=15.897＋0.377x＋0.019x2-0.001x3,y=1.997＋0.073x-0.003x2,y=0.300＋2.381＆#215;10-5x＋0.001x2-4.667＆#215;10-5x3,which reached the significant level. [Conclusion]The correlation fitting curves between plant height,branch number,inter-node length,stem diameter and topdressing level reached significant level. The 225 kg/ha topdressing of urea-compound （1∶1） fertilizer was the best for growth and yield formation of Salicornia bigelovii.

关 键 词：北美海蓬子 无机肥 追肥量 生物性状 产量 性状相关性 

分 类 号：S147.32[农业科学—肥料学]